JP2011527632A5 - - Google Patents

Claims (15)

Depositing dopamine on the membrane to form a polydopamine coating, wherein the polydopamine coating has a higher water flux and increased membrane surface hydrophilicity than the unmodified membrane, How to reduce.   The method according to claim 1, wherein the pure water flux of the polydopamine-coated membrane comprises 0 to 99% of the flux of the unmodified membrane. The method according to claim 1, wherein the pure water flux of the polydopamine-coated membrane comprises 80-90% of the flux of the unmodified membrane. Dopamine, halogen, hydroxyl group, a lower alkyl group, a lower alkoxy group, a monocyclic aryl, including substitution of one or more selected from the addition of lower acyl groups and combinations thereof, any of claim 1-3 the method according to any. The method according to claim 1, wherein the membrane comprises an RO membrane, a UF membrane, an NF membrane, or a combination thereof. The polydopamine coating film has the following polymethyl methacrylate, polystyrene, polycarbonate, polyimide, epoxy resin, cyclic olefin copolymer, cyclic olefin polymer, acrylate polymer, polyethylene terephthalate, polyphenylene vinylene, polyether ether ketone, poly (N- vinylcarbazole), acrylonitrile - styrene copolymer, or a polyether containing one or more of the imide poly (phenylene vinylene), the method of any of claims 1-5. Dopamine is ROOH, ROSH, RSSH, OH, SO3H, SO3R, SO4R, COOH, NH2, NHR, NR2, CONH2, and NH--NH2 (wherein R is a saturated or unsaturated at least one carbon system) 1 or 2 or more functional groups selected from linear or branched hydrocarbon-based chains capable of forming a ring; representing alkylene, siloxane, silane, ether, polyether, thioether, silylene, and silazane) The method in any one of Claims 1-6 containing these . Polydopamine-coated membrane comprises one or more polysulfones, copolymers of styrene and acrylonitrile poly (arylene oxide), polycarbonate, cellulose acetate, polysulfone; poly (styrene), styrene-containing copolymers, acrylonitrile styrene copolymers, styrene-butadiene copolymers , Styrene-vinyl benzyl halide copolymer; polycarbonate; cellulose polymer, cellulose acetate-butyrate, cellulose propionate, ethyl cellulose, methyl cellulose, nitrocellulose, polyamide, polyimide, aryl polyamide, aryl polyimide, polyether, poly (arylene oxide), poly ( Phenylene oxide), poly (xylene oxide); poly (ester amide-diisocyanate) Polyurethane, polyester (including polyarylate), poly (ethylene terephthalate), poly (alkyl methacrylate), poly (acrylate), poly (phenylene terephthalate), polysulfide, poly (ethylene), poly (propylene), poly (butene- 1), poly (4-methylpentene-1), polyvinyl, poly (vinyl chloride), poly (vinyl fluoride), poly (vinylidene chloride), poly (vinylidene fluoride), poly (vinyl alcohol), poly (vinyl) Ester), poly (vinyl acetate), poly (vinyl propionate), poly (vinyl pyridine), poly (vinyl pyrrolidone), poly (vinyl ether), poly (vinyl ketone), poly (vinyl aldehyde), poly (vinyl formal), Poly (vinyl butyral), poly (bi Luamide), poly (vinylamine), poly (vinylurethane), poly (vinylurea), poly (vinylphosphate), poly (vinylsulfate), polyallyl; poly (benzobenzimidazole), polyhydrazide, polyoxadiazole, poly The method according to any one of claims 1 to 7, comprising triazole, poly (benzimidazole), polycarbodiimide, polyphosphazine and combinations thereof. The method according to any one of claims 1 to 8 , further comprising applying one or more second coatings to the polydopamine-coated membrane. The method according to any one of claims 1 to 9 , further comprising applying one or more hydrophilic coatings to the polydopamine-coated membrane. A purification membrane;
A polydopamine layer deposited on the purification film to form a polydopamine coating film, wherein the polydopamine layer increases the hydrophilicity of the purification film, and the polydopamine coating film has a high water flux A polydopamine layer,
A liquid separation device comprising one or more containers positioned on different surfaces of the polydopamine-coated membrane to contain the separated liquid. A hydrophobic purification membrane;
A polydopamine layer in contact with the hydrophobic purification film to form a polydopamine-coated hydrophobic purification film having a higher water flux and higher hydrophilicity than an unmodified hydrophobic film;
A purification membrane comprising a hydrophilic coating that is in contact with the polydopamine layer to form a plurality of hydrophobic-polydopamine-hydrophilic purification membranes. A polymer matrix purification membrane;
A purification film comprising aromatic dihydroxy and amine-containing monomers deposited on the purification film to form an aromatic dihydroxy and amine-coated purification film having a higher water flux and higher hydrophilicity than an unmodified film. A polymer matrix purification membrane;
A purification film comprising a polydopamine layer deposited on the purification film to form a polydopamine-coated purification film having a higher water flux and higher hydrophilicity than an unmodified film. A polydopamine-coated purification membrane system for modifying a conventional purification membrane,
A dopamine solution located in the supply tank;
A pump connected to the supply tank to move the dopamine solution to provide a high transmembrane pressure;
A membrane inlet connection for connecting the pump to the membrane and depositing the dopamine solution on the membrane;
A polydopamine-coated purification membrane system comprising a membrane outlet connection for connecting the membrane to the supply tank and returning the dopamine solution to the supply tank.